{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x20b91f012b2f9f934d5ac7b29a6ba03920d70b5e1b37531595b6ba061e30801f",
    "signature": "0xe0e8c7f030024153946e52201bf96b17e7eac361956f7c18f4610ab4925392967c3f5abe9801dbf6387abd6cd6e9f61dcadd1bc4e309d375270b5c7b842e3a091b",
    "signer": "0x6aeCb25B834a4f95Dc6C5113816B2C748b30432f",
    "userId": "999536589"
  }
}